The new Japanese constitution, which was promulgated in 1946, made a number of major changes to elections. These changes included:
* **Women were given the right to vote.** This was a major change from the previous constitution, which only allowed men to vote.
* **The minimum voting age was lowered from 25 to 20.** This made it easier for young people to participate in the political process.
* **The secret ballot was introduced.** This ensured that voters could cast their ballots without fear of reprisal.
* **The multi-member district system was replaced with a single-member district system.** This made it easier for voters to know who their representatives were.
* **The number of seats in the Diet was increased.** This gave more people a chance to be elected to the Diet.
In addition to these changes, the new constitution also abolished the upper House of Peers, which consisted of members of the nobility (similar to the British House of Lords). The new constitution provides that both chambers be directly elected, with a lower House of Representatives and an upper House of Councillors. The Diet nominates the Prime Minister from among its members, although the Lower House has the final authority if the two Houses disagree.
These changes made Japanese elections more democratic and gave the people a greater voice in their government.